Once upon a time I tried copy/pasting a router config and it broke the router in a big way. Half of it was missing that sorta thing.

Reason is hyperterminal in all it's free genius, doesn't wait for the terminal to catch up before throwing more commands at it.

There's a client I use from time to time called Tera Term that has an option called Transmit delay msec/line. I use it around 50ms and it doesn't screw up quite so much. Although TFTP servers are easy too...

You can find a link to the free download here:
topic70.html

I have not been unlucky enough for that to happen to me before but I usually try to paste configs in only a page or two at a time so that I can watch all the lines go through then try and check the configs afterwards to make sure that they look correct.

Ill keep it in the back of the mind though for future reference.

im assuming its only going to fault when the config is quiet large?

Jimmy would be the man to answer that but I would say so.

Hyperterminal has worked fine for the last 7 years that I have been using it but thats only pasteing in small parts of configs.

I'm talking entire configs. First time it happened to me, the config was only some 50 lines but it was on a slower router.

With configs >1000 lines it gets a little more important.